Method for manufacturing steel bands, wires, or the like enveloped in celluloid or similar material.



llITED STATES PATENT OFFICE.

HANS GT TNTHNER', OF AUGSBURG, GERMANY.

METHOD FOR IVIANUFACTURING STEEL BANDS, WIRES, OR THE. LIKE ENVELOPEDIN' CELLULOID OR SIMILAR MATERIAL.

l lo Drawing.

To all whom it may 0012001 12 Be it known that l, HANS GiiN'rHNnn,engineer, a subject of the King of Bavar1a, and residing at Augsburg,Germany, have 1nvented certain new and useful IIHPI'OVQRHBHtS inlllethods for Manufacturing Steel Bands, Wires, or the like Enveloped inCelluloid or Similar Material, of which the following 1s aspecification.

In manufacturing corset and dress steels made of strips of steel withcelluloid covering these steel strips were hitherto wrapped in celluloidor a substitute therefor, in the same manner as this is the case withcorset steels wrapped in paper. The enveloping material. will in thisinstance lie close to the steel strip. The finished product cantherefore be only very slightly thicker and broader than the filling,namely by a few tenths of a millimeter according to the thickness of theenveloping material. It is therefore necessary to use comparativelythick and broad steels, so as to obtain the customary dimensions of thecovered article. It has been proposed to place the filling between twoplates or strips of the enveloping material, celluloid or the like, andto then unite these plates or strips with each other and the filling inknown manner by heat and a simultaneously applied pressure or by otherknown means. In these known processes it is necessary for the absolutelyequally Wide steel strips to be laid by means of templets, quiteparallel and at equal distances from each other, and held in such aposition, until the cover plate of celluloid is placed over them and thewhole is secured between the grooved press plates, if the fillings arenot to shift before or during the pressing process. "With this processthe width of the finished article will always de pend on. the width ofthe inlaid steel.

According to the present invention steel strips or steel wires of anysection are covered with celluloid, celluloid substitute and otherelastic materials or by a subsequent re moval of the steel cores,seamless celluloid or other covers may be produced. According to thepresent method the steel strips are also laid between two plates andpressed with these plates, but the spaces intervening the several steelstrips are not left empty, as in the known methods, but are filled outtopics of this patent may be obtained for five cents each, by addressingthe Specification of Letters Patent.

Application filed February 4 1911.

Patented June 9, 1914. Serial No. 606,659.

with strips of celluloid and the like. On a plate consisting of therespective covering material, celluloid or the like, which is to formthe bottom, is placed first a strip of clluloid then a strip of steeland so on one next to the other until the bottom plate is quite filledup. Now the whole is covered with a second plate of enveloping material,celluloid and the like. The joining of the top and bottom and theintermediate strips to each other and with the steel cores is nowcarried out in known manner by heat and pressure or by other suitablemeans. After the several parts have been joined to each other thecomposite plate thus produced is divided along the middle of theintermediate strips, so that the corset-, bodice-, and similar steelsare obtained of the desired widths.

In place of a single strip of steel or a wire also two or more (doublesteels) may be employed as cores. The steel core may furthermore berigidly attached to the enveloping material or it may be provided, thatthe cor-e remains loose in the envelop. Lastly the present method allowsof employing the core as a mandrel only, which is subsequently withdrawnin known manner after the manufacture has been completed. By this meansit will be possible to produce seamless tubes for paints and cosmetics,seamless hose and similar articles of celluloid or similar material.

I claim:

A method of enveloping elastic inserts in celluloid or similarmaterials, consisting in placing the elastic inserts in spaced relationupon a sheet of material, filling the spaces between the inserts withstrips of the enveloping material, said strips and insertions being ofthe same height, superposing a cover sheet of material pressing saidsheets between plates under the action of a heating agent to an integralplate, dividing the plate thus formed into strips along the middle ofsaid filling strips of material, and finishing the strips, substantiallyas herein described.

In testimony whereof, I afiix my signature in the presence of twowitnesses.

HANS GUNTHNER. lVitnesses:

JVILHELM KnArr, CHAS. Bonnenannnn.

Commissioner of Patents.

Washington, D. G.

